Diamond Loop Back Country Byway
Local Visitor Information
Discover more ways to experience this byway — photos and local partners.
Explore Resources
Find maps, guides, weather, and seasonal information for this byway.
Byway Overview
Highlights high-desert scenery, wildlife, and volcanic formations. Key stops include the 25,000-year-old Diamond Craters Outstanding Natural Area, the historic Pete French Round Barn, and the Malheur National Wildlife Refuge.
Quick Facts
- Designation
- BLM
- Location
- OR
- Total Length
- 69 miles
Visitor Information & Byway Partners
Contact Details
For personalized travel assistance and local recommendations, please reach out to our regional visitor center.
Local Byway Partners
The route can be accessed from three main points: near Princeton (Hwy 78), the junction of Hwy 205 and Diamond Lane, or Frenchglen. A recommended path is to turn east onto Diamond Lane from 205, navigate through the refuge, turn north on Lava Beds Road for the craters, and continue to the Round Barn area.
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Historic Brochure
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Diamond Craters Outstanding Natural Area
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Malheur National Wildlife Refuge
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Peter French Round Barn
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USFWS